EP0353680A2 - Apparatus for producing plate flanges by bending - Google Patents

Apparatus for producing plate flanges by bending Download PDF

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Publication number
EP0353680A2
EP0353680A2 EP89114074A EP89114074A EP0353680A2 EP 0353680 A2 EP0353680 A2 EP 0353680A2 EP 89114074 A EP89114074 A EP 89114074A EP 89114074 A EP89114074 A EP 89114074A EP 0353680 A2 EP0353680 A2 EP 0353680A2
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EP
European Patent Office
Prior art keywords
bending
tool
drive device
tools
movements
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Granted
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EP89114074A
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German (de)
French (fr)
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EP0353680A3 (en
EP0353680B1 (en
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Rolf Nagel
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Individual
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Priority to AT89114074T priority Critical patent/ATE77270T1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
    • B21D5/045—With a wiping movement of the bending blade

Definitions

  • the invention relates to a device for producing sheet metal bends by bending in which the workpiece can be clamped between two holding dies designed as counter-tools, in addition to an upper bending tool intended for downward bends, a lower bending tool intended for upward bends, one with a cross-section to the workpiece towards jaw-opening rocker carries one of the two bending tools on each of its two jaw edges and a drive device for essentially vertical tool movements is articulated on the rocker in addition to a drive device for essentially horizontal tool movements.
  • edge profiles can be formed in sheets in a multi-step process, without having to turn the workpiece when changing the bending direction within the edge sequence.
  • Manufacturing examples are refrigerator doors, luminaire housings, cladding elements for building walls and ceilings, control cabinet parts, steel furniture parts and shelf elements. Due to a programmed interaction of the drive device for essentially horizontal tool movements with the drive device for essentially vertical tool movements, the working surface of the bending tool used describes a path leading around the associated cold stamp, which protects the workpiece surface.
  • pressing devices in which the sheet is pressed into a die by a punch and the protruding side parts of the workpiece flip up accidentally.
  • a device of the type mentioned at the outset is already known from document EP 0 022 122 B1.
  • the two drive devices of this known device for producing sheet metal bending by bending are designed as crank drives.
  • a cylinder is inserted into the crank mechanism for essentially vertical tool movements, which cylinder is actuated to change the other bending tool when the bending direction is changed.
  • Another cylinder is used to move a pivot point on a drive rocker for the joint drive of the two crank drives.
  • the design of the drive devices and the programming of the path curve of the bending tool used are accordingly complicated. It also appears to be disadvantageous that the rocker arm, which opens in cross-section towards the workpiece, has no space in its mouth for bending overhanging edge strips of workpieces. On the other hand, a lot of working time is always lost when the bending direction is changed within an edge sequence and the other bending tool must be used for this purpose.
  • the invention has for its object to provide a bending device of the type mentioned, which on the one hand allows a quick changeover to the other bending tool with little effort and on the other hand offers ample space for bending overhanging workpiece parts.
  • rocker is hinge-like in two separately pivotable about the rocker axis and each carrying one of the two bending tools and one drive device is articulated on each jaw for substantially vertical tool movements.
  • the jaw width of the swing arm can thus be adapted to the space required by the workpiece part protruding from the two holding dies when bending. With only small sheet metal bends, the jaw width of the rocker is reduced, so that starting the other bending tool for the purpose of changing the bending direction requires little time. However, if the sheet to be bent is far from the holding dies designed as counter tools and if it is possibly already formed into a bulky structure by at least one bend, the jaw width of the rocker can be increased accordingly.
  • the two drive devices for essentially vertical tool movements only the one which is articulated to the jaws carrying the bending tool to be used is actuated in the working phase of the bending device.
  • the drive device for the we Significant horizontal tool movements are common to the two jaws.
  • the two drive devices can be designed for substantially vertical tool movements in widely differing maximum paths.
  • Advantages achieved with the invention are, in particular, that wider sheet metal bends and ultimately more complicated edge profiles can be produced and that the bending device can be used more universally in an enlarged area of application.
  • the drawing shows the bending device at the end of the bending process for a particularly wide bend 10 in a sheet metal 13 clamped between the fixed lower holding die 11 and the ventable upper holding die 12, after two substantially narrower bends 14 and 15 in the opposite bending direction on the same workpiece 13 have been manufactured.
  • a total of three drive devices 19, 20 and 21 are provided for the swing arm 18 of the bending device which is hinge-divided in the upper jaws 16 and the lower jaws 17, of which the drive device 19 is connected to the swing arm axis 23 via a hinge block 22, the drive device 20 in one on the top of the upper jaw 16 near the top bend Tool 24 attached bearing block 25 is articulated and the drive device 21 is articulated in a bearing block 27 attached to the underside of the lower jaw 17 near the lower bending tool 26.
  • the fact that the three drive devices 19, 20 and 21 consist of hydraulic cylinders pivotably mounted on the device frame 28 gives the bending device high performance, great flexibility in the control of the movement sequences and a simple structural design.
  • rocker shaft 23 which can be carried by the drive device 19 for essentially horizontal tool movements, is mounted in pivotable support brackets 29.
  • support lugs 29, which in turn are pivotably mounted with their lower ends on the device frame 28, the swing arm axis 23 is guided on a circular arc deviating from the horizontal.
  • the two drive devices 20 and 21 are designed for essentially vertical tool movements on very different maximum paths. Since only the upper cold stamp 12 can be lifted from the two holding stamps 11 and 12, the larger maximum path is assigned to the upper bending tool 24.
  • two coaxial hydraulic cylinders are provided as the drive device 20 articulated on the upper jaw 16, one of which hydraulic cylinder the working area of the upper bending tool 24 and the other hydraulic cylinder of the individual space dimensioning for the fold 10 generated by the lower bending tool 26 of the workpiece 13 is assigned.
  • the space requirement of the edge profile consisting of the bevels 10, 14 and 15 is illustrated by the arcuate envelope 30.
  • the ventilation height of the upper holding die 12 corresponds approximately to the maximum path of the upper bending tool 24.
  • a hydraulic cylinder 31 is provided which is firmly supported on the device frame 28, the piston rod 32 of which at the lower end is provided by a coaxial countersunk screw 33 with the immersion space 34 for the hydraulic cylinder 31 and in turn the upper beam 35 carrying the holding stamp 12 is connected.
  • the holding punch 12 is designed as an interchangeable counter-tool and is secured in the upper cheek 35 against falling out by a sliding block 36 extending in both longitudinal directions.
  • the lower holding punch 11 which is also designed as an interchangeable counter-tool, is fixed on the lower cheek 37 which is firmly supported on the device frame 28.
  • the two bending tools 24 and 26 are also interchangeable for changing the length and cross-sectional area. They are screwed to the free end of the two separately pivotable jaws 16 and 17 secured by a fit.
  • the jaw depth of the rocker 18 corresponds approximately to the maximum travel of the upper bending tool 24. Since the mutually facing inner surfaces of the two jaws 16 and 17 in one of the mutual contact of the two bending tools 24 and 26 close position parallel to each other, the times before bending for turning on the bending tools 24 and 26 can be kept extremely short, as long as the step profile to be manufactured does not reach a greater height. On the other hand, the significance of the bending device described lies precisely in the free space for the production of particularly high edge profiles. However, this freedom is only provided when necessary. The two jaws 16 and 17 then form a considerable opening angle with their mutually facing inner surfaces, the influence of the drive device 20 exceeding the influence of the drive device 21.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

The main starting point was that the workpiece (13) can be clamped between two holding punches (11, 12) designed as counter tools, a link (18) carries, at its two jaw edges, in each case one of two bending tools (24, 26), and a drive device (20) for essentially vertical tool movements is provided outside a drive device (19) for essentially horizontal tool movements. The intention is, with a small outlay, on the one hand to permit rapid switching to the other bending tool, and, on the other hand, to offer ample space for bending workpiece parts projecting a long way. The link (18) is therefore divided, in a manner of a hinge, into two cheeks (16, 17) which can pivot separately about the link axle (23) and each carry one of the two bending tools (24, 26), and a drive device (20, 21) is articulated on each of the two cheeks (16, 17) for essentially vertical tool movements. The drive device (20) assigned to the upper bending tool (24) is preferably designed for the larger maximum travel. The bending device can be employed universally in an enlarged field of use since wider plate flanges and, ultimately, more complicated edge profiles can be produced. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum Erzeugen von Blechabkantungen durch Biegen bei der das Werkstück zwischen zwei als Gegenwerkzeuge ausgebildeten Haltestem­peln einspannbar ist, außer einem für Abkantungen nach unten bestimmten oberen Biegewerkzeug ein für Abkantun­gen nach oben bestimmtes unteres Biegewerkzeug vorgese­hen ist, eine sich im Querschnitt zum Werkstück hin maul­förmig öffnende Schwinge an ihren beiden Maulrändern je eines der beiden Biegewerkzeuge trägt und an der Schwin­ge außer einer Antriebseinrichtung für im wesentlichen horizontale Werkzeugbewegungen eine Antriebseinrichtung für im wesentlichen vertikale Werkzeugbewegungen ange­lenkt ist.The invention relates to a device for producing sheet metal bends by bending in which the workpiece can be clamped between two holding dies designed as counter-tools, in addition to an upper bending tool intended for downward bends, a lower bending tool intended for upward bends, one with a cross-section to the workpiece towards jaw-opening rocker carries one of the two bending tools on each of its two jaw edges and a drive device for essentially vertical tool movements is articulated on the rocker in addition to a drive device for essentially horizontal tool movements.

Mit derartigen Vorrichtungen lassen sich im Mehrschritt­verfahren kompliziertere Randprofile in Bleche einformen, ohne beim Wechseln der Biegerichtung innerhalb der Kan­tenfolge das Werkstück wenden zu müssen. Fertigungsbei­spiele sind Kühlschranktüren, Leuchtengehäuse, Verklei­dungselemente für Gebäudewände und Gebäudedecken, Schalt­schrankteile, Stahlmöbelteile und Regalelemente. Durch ein programmiertes Zusammenspiel der Antriebseinrichtung für im wesentlichen horizontale Werkzeugbewegungen mit der Antriebseinrichtung für im wesentlichen vertikale Werkzeugbewegungen beschreibt die Arbeitsfläche des be­nutzten Biegewerkzeugs eine um den zugehörigen Kalte­stempel herumführende Bahn, was die Werkstückoberfläche schont. Zu unterscheiden sind davon insbesondere Preß­vorrichtungen, bei denen das Blech von einem Stempel in ein Gesenk gedrückt wird und die überstehenden Seiten­teile des Werkstücks unfallträchtig hochschlagen.With devices of this type, more complicated edge profiles can be formed in sheets in a multi-step process, without having to turn the workpiece when changing the bending direction within the edge sequence. Manufacturing examples are refrigerator doors, luminaire housings, cladding elements for building walls and ceilings, control cabinet parts, steel furniture parts and shelf elements. Due to a programmed interaction of the drive device for essentially horizontal tool movements with the drive device for essentially vertical tool movements, the working surface of the bending tool used describes a path leading around the associated cold stamp, which protects the workpiece surface. A distinction is to be made in particular between pressing devices in which the sheet is pressed into a die by a punch and the protruding side parts of the workpiece flip up accidentally.

Durch das Dokument EP 0 022 122 B1 ist bereits eine Vor­richtung der eingangs angeführten Gattung bekannt. Die beiden Antriebseinrichtungen dieser bekannten Vorrich­tung zum Erzeugen von Blechabkantungen durch Biegen sind als Kurbeltriebe ausgebildet. In den Kurbeltrieb für im wesentlichen vertikale Werkzeugbewegungen ist ein Zylin­der eingefügt, der zum Anstellen des jeweils anderen Biegewerkzeugs beim wechseln der Biegerichtung betätigt wird. Ein anderer Zylinder dient dem Verlagern einer An­lenkstelle an einer Antriebsschwinge für den gemeinsamen Antrieb der beiden Kurbeltriebe. Der konstruktive Aufbau der Antriebseinrichtungen und das Programmieren der Bahn­kurve des benutzten Biegewerkzeugs sind dementsprechend kompliziert. Als nachteilig erscheint es außerdem, daß die sich im Querschnitt zum Werkstück hin maulförmig öffnende Schwinge in ihrem Maul keinen Platz zum Umbie­gen ausladenderer Randstreifen von Werkstücken bietet. Andererseits geht stets viel Arbeitszeit verloren, wenn innerhalb einer Kantenfolge die Biegerichtung gewechselt wird und dazu das jeweils andere Biegewerkzeug anzustel­len ist.A device of the type mentioned at the outset is already known from document EP 0 022 122 B1. The two drive devices of this known device for producing sheet metal bending by bending are designed as crank drives. A cylinder is inserted into the crank mechanism for essentially vertical tool movements, which cylinder is actuated to change the other bending tool when the bending direction is changed. Another cylinder is used to move a pivot point on a drive rocker for the joint drive of the two crank drives. The design of the drive devices and the programming of the path curve of the bending tool used are accordingly complicated. It also appears to be disadvantageous that the rocker arm, which opens in cross-section towards the workpiece, has no space in its mouth for bending overhanging edge strips of workpieces. On the other hand, a lot of working time is always lost when the bending direction is changed within an edge sequence and the other bending tool must be used for this purpose.

Der Erfindung liegt die Aufgabe zugrunde, eine Biegevor­richtung der eingangs angeführten Gattung zu schaffen, die mit geringem Aufwand einerseits ein schnelles Umstel­len auf das andere Biegewerkzeug ermöglicht und anderer­seits reichlich Platz zum Umbiegen weit ausladender Werk­stückteile bietet.The invention has for its object to provide a bending device of the type mentioned, which on the one hand allows a quick changeover to the other bending tool with little effort and on the other hand offers ample space for bending overhanging workpiece parts.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Schwinge in zwei um die Schwingenachse gesondert ver­schwenkbare und je eines der beiden Biegewerkzeuge tra­gende Backen scharnierartig geteilt ist und an beiden Backen je eine Antriebseinrichtung für im wesentlichen vertikale Werkzeugbewegungen angelenkt ist.This object is achieved in that the rocker is hinge-like in two separately pivotable about the rocker axis and each carrying one of the two bending tools and one drive device is articulated on each jaw for substantially vertical tool movements.

Damit läßt sich die Maulweite der Schwinge dem Platz an­passen, den das von den beiden Haltestempeln abstehende Werkstückteil beim Umbiegen benötigt. Bei lediglich klei­nen Blechabkantungen wird die Maulweite der Schwinge ver­ringert, so daß das Anstellen des jeweils anderen Biege­werkzeugs zum Zwecke des Wechselns der Biegerichtung nur wenig Zeit erfordert. Steht das umzubiegende Blech je­doch weit von den als Gegenwerkzeuge ausgebildeten Halte­stempeln ab und ist es womöglich bereits durch wenigstens eine Abkantung zu einem sperrigen Gebilde geformt, so kann die Maulweite der Schwinge entsprechend vergrößert werden. Von den beiden Antriebseinrichtungen für im we­sentlichen vertikale Werkzeugbewegungen wird in der Ar­beitsphase der Biegevorrichtung nur diejenige betätigt, die an dem das zu benutzende Biegewerkzeug tragenden Backen angelenkt ist. Die Antriebseinrichtung für im we­ sentlichen horizontale Werkzeugbewegungen ist dagegen den beiden Backen gemeinsam. Nachdem beim schrittweisen Einformen komplizierterer Randprofile zumeist eine Ab­kantung dominiert und in der Kantenfolge den Abschluß bildet, ist es besonders vorteilhaft, daß sich die bei­den Antriebseinrichtungen für im wesentlichen vertikale Werkzeugbewegungen auf stark unterschiedliche Maximal­wege auslegen lassen. Mit der Erfindung erzielte Vortei­le bestehen aber insbesondere auch darin, daß breitere Blechabkantungen und letztlich kompliziertere Randpro­file gefertigt werden können und sich die Biegevorrich­tung in einem vergrößerten Einsatzbereich universeller verwenden läßt.The jaw width of the swing arm can thus be adapted to the space required by the workpiece part protruding from the two holding dies when bending. With only small sheet metal bends, the jaw width of the rocker is reduced, so that starting the other bending tool for the purpose of changing the bending direction requires little time. However, if the sheet to be bent is far from the holding dies designed as counter tools and if it is possibly already formed into a bulky structure by at least one bend, the jaw width of the rocker can be increased accordingly. Of the two drive devices for essentially vertical tool movements, only the one which is articulated to the jaws carrying the bending tool to be used is actuated in the working phase of the bending device. The drive device for the we Significant horizontal tool movements are common to the two jaws. Since in the step-by-step molding of more complicated edge profiles mostly a bend dominates and forms the end in the sequence of edges, it is particularly advantageous that the two drive devices can be designed for substantially vertical tool movements in widely differing maximum paths. Advantages achieved with the invention are, in particular, that wider sheet metal bends and ultimately more complicated edge profiles can be produced and that the bending device can be used more universally in an enlarged area of application.

Ein aufgrund der in den Unteransprüchen angegebenen Er­findungsausgestaltungen bevorzugtes Ausführungsbeispiel der Erfindung ist in der teilweise schematischen Zeich­nung dargestellt und wird im folgenden näher beschrie­ben.An exemplary embodiment of the invention which is preferred on the basis of the inventive configurations specified in the subclaims is shown in the partially schematic drawing and is described in more detail below.

Die Zeichnung zeigt die Biegevorrichtung am Ende des Biegevorgangs für eine besonders breite Abkantung 10 in einem zwischen dem feststehenden unteren Haltestempel 11 und dem lüftbaren oberen Haltestempel 12 eingespannten Blech 13, nachdem zuvor an demselben Werkstück 13 in der entgegengesetzten Biegerichtung zwei wesentlich schma­lere Abkantungen 14 und 15 gefertigt worden sind. Für die in den oberen Backen 16 und den unteren Backen 17 scharnierartig geteilte Schwinge 18 der Biegevorrichtung sind insgesamt drei Antriebseinrichtungen 19, 20 und 21 vorgesehen, von denen die Antriebseinrichtung 19 über einen Scharnierklotz 22 mit der Schwingenachse 23 verbun­den ist, die Antriebseinrichtung 20 in einem auf der Oberseite des oberen Backens 16 nahe dem oberen Biege­ werkzeug 24 befestigten Lagerblock 25 angelenkt ist und die Antriebseinrichtung 21 in einem auf der Unterseite des unteren Backens 17 nahe dem unteren Biegewerkzeug 26 befestigten Lagerblock 27 angelenkt ist. Dadurch, daß die drei Antriebseinrichtungen 19, 20 und 21 aus am Vor­richtungsgestell 28 schwenkbar gelagerten Hydraulikzylin­dern bestehen, erhält die Biegevorrichtung eine hohe Lei­stungskraft, eine große Flexibilität in der Steuerung der Bewegungsabläufe und einen einfachen konstruktiven Aufbau. Einen weiteren Beitrag hierzu liefert der Um­stand, daß die von der Antriebseinrichtung 19 für im we­sentlichen horizontale Werkzeugbewegungen mitnehmbare Schwingenachse 23 in schwenkbaren Stützlaschen 29 gela­gert ist. Infolge der mit ihren unteren Enden am Vorrich­tungsgestell 28 ihrerseits schwenkbar gelagerten Stütz­laschen 29 wird die Schwingenachse 23 auf einem von der Horizontalen abweichenden Kreisbogen geführt.The drawing shows the bending device at the end of the bending process for a particularly wide bend 10 in a sheet metal 13 clamped between the fixed lower holding die 11 and the ventable upper holding die 12, after two substantially narrower bends 14 and 15 in the opposite bending direction on the same workpiece 13 have been manufactured. A total of three drive devices 19, 20 and 21 are provided for the swing arm 18 of the bending device which is hinge-divided in the upper jaws 16 and the lower jaws 17, of which the drive device 19 is connected to the swing arm axis 23 via a hinge block 22, the drive device 20 in one on the top of the upper jaw 16 near the top bend Tool 24 attached bearing block 25 is articulated and the drive device 21 is articulated in a bearing block 27 attached to the underside of the lower jaw 17 near the lower bending tool 26. The fact that the three drive devices 19, 20 and 21 consist of hydraulic cylinders pivotably mounted on the device frame 28 gives the bending device high performance, great flexibility in the control of the movement sequences and a simple structural design. A further contribution to this is made by the fact that the rocker shaft 23, which can be carried by the drive device 19 for essentially horizontal tool movements, is mounted in pivotable support brackets 29. As a result of the support lugs 29, which in turn are pivotably mounted with their lower ends on the device frame 28, the swing arm axis 23 is guided on a circular arc deviating from the horizontal.

Mit Rücksicht auf die Fertigung von besonders weit aus­ladenden Randprofilen, die eine dominierende Abkantung 10 aufweisen, sind die beiden Antriebseinrichtungen 20 und 21 für im wesentlichen vertikale Werkzeugbewegungen auf stark unterschiedliche Maximalwege ausgelegt. Da von den beiden Haltestempeln 11 und 12 nur der obere Kalte­stempel 12 lüftbar ist, ist der größere Maximalweg dem oberen Biegewerkzeug 24 zugeordnet. Zur Vereinfachung des konstruktiven Aufbaus der Biegevorrichtung sind dazu als am oberen Backen 16 angelenkte Antriebseinrichtung 20 zwei koaxial aneinandergereihte Hydraulikzylinder vor­gesehen, von denen der eine Hydraulikzylinder dem Ar­beitsbereich des oberen Biegewerkzeugs 24 und der andere Hydraulikzylinder der individuellen Platzbemessung für die vom unteren Biegewerkzeug 26 erzeugte Abkantung 10 des Werkstücks 13 zugeordnet ist. In der Zeichnung ist der Platzbedarf des aus den Abkantungen 10, 14 und 15 be­stehenden Randprofils durch die kreisbogenförmige Hüll­kurve 30 veranschaulicht.With regard to the production of particularly wide cantilevered edge profiles which have a dominant bend 10, the two drive devices 20 and 21 are designed for essentially vertical tool movements on very different maximum paths. Since only the upper cold stamp 12 can be lifted from the two holding stamps 11 and 12, the larger maximum path is assigned to the upper bending tool 24. To simplify the structural design of the bending device, two coaxial hydraulic cylinders are provided as the drive device 20 articulated on the upper jaw 16, one of which hydraulic cylinder the working area of the upper bending tool 24 and the other hydraulic cylinder of the individual space dimensioning for the fold 10 generated by the lower bending tool 26 of the workpiece 13 is assigned. In the drawing is the space requirement of the edge profile consisting of the bevels 10, 14 and 15 is illustrated by the arcuate envelope 30.

Eine andere die Fertigung besonders weit ausladender Randprofile fördernde Ausgestaltung der Biegevorrichtung besteht darin, daß die Lüftungshöhe des oberen Halte­stempels 12 etwa dem Maximalweg des oberen Biegewerk­zeugs 24 entspricht. Um das zwischenzeitliche Anheben des oberen Haltestempels 12 zum Zwecke des Zeitgewinns auf die jeweilige Bedarfshöhe zu beschränken, ist ein am Vorrichtungsgestell 28 fest abgestützter Hydraulikzylin­der 31 vorgesehen, dessen Kolbenstange 32 am unteren Ende durch eine koaxiale Senkschraube 33 mit der dem Ky­draulikzylinder 31 einen Eintauchraum 34 bietenden und ihrerseits den Haltestempel 12 tragenden Oberwange 35 verbunden ist. Der Haltestempel 12 ist als auswechselba­res Gegenwerkzeug ausgebildet und in der Oberwange 35 durch einen sich in beider Längsrichtung erstreckenden Gleitstein 36 gegen ein Herausfallen gesichert. Der eben­falls als auswechselbares Gegenwerkzeug ausgebildete un­tere Haltestempel 11 ist auf der sich am Vorrichtungs­gestell 28 fest abstützenden Unterwange 37 festgelegt. Auch die beiden Biegewerkzeuge 24 und 26 sind zur Ände­rung von Länge und Querschnittsfläche je für sich aus­wechselbar. Sie werden an das freie Stirnende der beiden gesondert verschwenkbaren Backen 16 und 17 durch eine Paßform gesichert angeschraubt.Another embodiment of the bending device which promotes the production of particularly wide cantilever profiles is that the ventilation height of the upper holding die 12 corresponds approximately to the maximum path of the upper bending tool 24. In order to limit the intermediate lifting of the upper holding punch 12 for the purpose of saving time to the respective need level, a hydraulic cylinder 31 is provided which is firmly supported on the device frame 28, the piston rod 32 of which at the lower end is provided by a coaxial countersunk screw 33 with the immersion space 34 for the hydraulic cylinder 31 and in turn the upper beam 35 carrying the holding stamp 12 is connected. The holding punch 12 is designed as an interchangeable counter-tool and is secured in the upper cheek 35 against falling out by a sliding block 36 extending in both longitudinal directions. The lower holding punch 11, which is also designed as an interchangeable counter-tool, is fixed on the lower cheek 37 which is firmly supported on the device frame 28. The two bending tools 24 and 26 are also interchangeable for changing the length and cross-sectional area. They are screwed to the free end of the two separately pivotable jaws 16 and 17 secured by a fit.

In Anpassung an den größeren Maximalweg des oberen Bie­gewerkzeugs 24 ist schließlich noch dafür gesorgt, daß die Maultiefe der Schwinge 18 etwa dem Maximalweg des oberen Biegewerkzeugs 24 entspricht. Da die einander zu­gekehrten Innenflächen der beiden Backen 16 und 17 in einer der gegenseitigen Berührung der beiden Biegewerk­zeuge 24 und 26 nahen Stellung zueinander parallel ver­laufen, können die vor dem Biegen zum Anstellen der Bie­gewerkzeuge 24 und 26 benötigten Zeiten äußerst klein gehalten werden, solange das schrittweise zu fertigende Randprofil keine größere Höhe erreicht. Andererseits liegt die Bedeutung der beschriebenen Biegevorrichtung aber gerade auch in dem Freiraum zur Fertigung besonders hoch aufragender Randprofile. Dieser Freiraum wird je­doch nur im Bedarfsfall geboten. Die beiden Backen 16 und 17 bilden dann mit ihren einander zugekehrten Innen­flächen einen beträchtlichen Öffnungswinkel, wobei der Einfluß der Antriebseinrichtung 20 den Einfluß der An­triebseinrichtung 21 übertrifft.Finally, in adaptation to the larger maximum travel of the upper bending tool 24, it is ensured that the jaw depth of the rocker 18 corresponds approximately to the maximum travel of the upper bending tool 24. Since the mutually facing inner surfaces of the two jaws 16 and 17 in one of the mutual contact of the two bending tools 24 and 26 close position parallel to each other, the times before bending for turning on the bending tools 24 and 26 can be kept extremely short, as long as the step profile to be manufactured does not reach a greater height. On the other hand, the significance of the bending device described lies precisely in the free space for the production of particularly high edge profiles. However, this freedom is only provided when necessary. The two jaws 16 and 17 then form a considerable opening angle with their mutually facing inner surfaces, the influence of the drive device 20 exceeding the influence of the drive device 21.

Claims (9)

1. Vorrichtung zum Erzeugen von Blechabkantungen durch Biegen, bei der das Werkstück (13) zwischen zwei als Gegenwerkzeuge ausgebildeten Haltestempeln (11,12) einspannbar ist, außer einem für Abkantungen nach un­ten bestimmten oberen Biegewerkzeug (24) ein für Ab­kantungen nach oben bestimmtes unteres Biegewerkzeug (26) vorgesehen ist, eine sich im Querschnitt zum Werkstück (13) hin maulförmig öffnende Schwinge (18) an ihren beiden Maulrändern je eines der beiden Bie­gewerkzeuge (24,26) trägt und an der Schwinge (18) außer einer Antriebseinrichtung (19) für im wesent­lichen horizontale Werkzeugbewegungen eine Antriebs­einrichtung (20) für im wesentlichen vertikale Werk­zeugbewegungen angelenkt ist, dadurch gekenn­zeichnet, daß die Schwinge (18) in zwei um die Schwingenachse (23) gesondert verschwenkbare und je eines der beiden Biegewerkzeuge (24,26) tragende Backen (16,17) scharnierartig geteilt ist und an bei­den Backen (16,17) je eine Antriebseinrichtung (20,21) für im wesentlichen vertikale Werkzeugbewegungen an­gelenkt ist.1.Device for producing sheet metal bending by bending, in which the workpiece (13) can be clamped between two holding dies (11, 12) designed as counter-tools, in addition to an upper bending tool (24) intended for downward bending and a lower one intended for upward bending Bending tool (26) is provided, a rocker arm (18) opening in cross-section towards the workpiece (13) carries one of the two bending tools (24, 26) on its two jaw edges and on the rocker arm (18) in addition to a drive device (19 ) for essentially horizontal tool movements, a drive device (20) for essentially vertical tool movements is articulated, characterized in that the rocker arm (18) carries two of the two bending tools (24, 26) which can be pivoted separately about the rocker arm axis (23) Jaws (16, 17) is divided in a hinge-like manner and on both jaws (16, 17) there is a drive device (20, 21) for in essence normal vertical tool movements is articulated. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die von der Antriebseinrichtung (19) für im we­sentlichen horizontale Werkzeugbewegungen mitnehmbare Schwingenachse (23) in schwenkbaren Stützlaschen (29) gelagert ist.2. Apparatus according to claim 1, characterized in that the swinging axis (23) which can be taken by the drive device (19) for substantially horizontal tool movements is mounted in pivotable support straps (29). 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekenn­zeichnet, daß die beiden Antriebseinrichtungen (20,21) für im wesentlichen vertikale Werkzeugbewegungen auf stark unterschiedliche Maximalwege ausgelegt sind.3. Apparatus according to claim 1 or 2, characterized in that the two drive devices (20,21) are designed for substantially vertical tool movements on very different maximum paths. 4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß der größere Maximalweg dem oberen Biegewerkzeug (24) zugeordnet ist.4. The device according to claim 3, characterized in that the larger maximum path is assigned to the upper bending tool (24). 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Lüftungshöhe des oberen Haltestempels (12) etwa dem Maximalweg des oberen Biegewerkzeugs (24) entspricht.5. The device according to claim 4, characterized in that the ventilation height of the upper holding punch (12) corresponds approximately to the maximum path of the upper bending tool (24). 6. Vorrichtung nach Anspruch 4 oder 5, dadurch gekenn­zeichnet, daß die Maultiefe der Schwinge (18) etwa dem Maximalweg des oberen Biegewerkzeugs (24) ent­spricht.6. The device according to claim 4 or 5, characterized in that the jaw depth of the rocker (18) corresponds approximately to the maximum path of the upper bending tool (24). 7. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die einander zugekehrten Innen­flächen der beiden Backen (16,17) in einer der gegen­seitigen Berührung der beiden Biegewerkzeuge (24,26) nahen Stellung zueinander parallel verlaufen.7. Device according to one of claims 1 to 6, characterized in that the mutually facing inner surfaces of the two jaws (16,17) in a position close to the mutual contact of the two bending tools (24,26) run parallel to each other. 8. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die drei Antriebseinrichtungen (19,20,21) aus am Vorrichtungsgestell (28) schwenkbar gelagerten Hydraulikzylindern bestehen.8. Device according to one of claims 1 to 7, characterized in that the three drive devices (19, 20, 21) consist of hydraulic cylinders pivotably mounted on the device frame (28). 9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß als am oberen Backen (16) angelenkte Antriebsein­richtung (20) zwei koaxial aneinandergereihte Hydrau­likzylinder vorgesehen sind, von denen der eine Hy­draulikzylinder dem Arbeitsbereich des oberen Biege­werkzeugs (24) und der andere Hydraulikzylinder der individuellen Platzbemessung für die vom unteren Bie­gewerkzeug (26) erzeugte Abkantung (10) des Werkstücks (13) zugeordnet ist.9. The device according to claim 8, characterized in that as the upper jaw (16) articulated drive device (20) two coaxial hydraulic cylinders are provided, one of which hydraulic cylinder the working area of the upper bending tool (24) and the other hydraulic cylinder of the individual space dimensioning for the fold (10) of the workpiece (13) generated by the lower bending tool (26).
EP89114074A 1988-08-03 1989-07-29 Apparatus for producing plate flanges by bending Expired - Lifetime EP0353680B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89114074T ATE77270T1 (en) 1988-08-03 1989-07-29 DEVICE FOR CREATING SHEET METAL BENDS BY BENDING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3826310 1988-08-03
DE3826310A DE3826310A1 (en) 1988-08-03 1988-08-03 BENDING DEVICE FOR PRODUCING SHEET BENDING

Publications (3)

Publication Number Publication Date
EP0353680A2 true EP0353680A2 (en) 1990-02-07
EP0353680A3 EP0353680A3 (en) 1990-11-28
EP0353680B1 EP0353680B1 (en) 1992-06-17

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ID=6360125

Family Applications (1)

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EP89114074A Expired - Lifetime EP0353680B1 (en) 1988-08-03 1989-07-29 Apparatus for producing plate flanges by bending

Country Status (3)

Country Link
EP (1) EP0353680B1 (en)
AT (1) ATE77270T1 (en)
DE (1) DE3826310A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0490828A1 (en) * 1990-12-07 1992-06-17 SAMAT S.r.l. A sheet-metal bending machine
EP0567193A1 (en) * 1992-04-22 1993-10-27 SAPIM AMADA S.p.A. A device for moving the blades of a press used for bending sheets
US5259231A (en) * 1989-10-26 1993-11-09 Reinhardt Maschinenbau Gmbh Process for the two-directional bending of sheet metal
ES2063658A2 (en) * 1992-09-21 1995-01-01 Goiti S Coop Ltda Improved machine for folding sheet metal
EP0995509A1 (en) * 1998-10-19 2000-04-26 Paul Weinbrenner Maschinenbau GmbH &amp; Co. KG Bending machine
EP1121996A2 (en) * 2000-01-31 2001-08-08 Goiti, S.Coop Bending press for metal sheets
US6516648B1 (en) * 1999-01-19 2003-02-11 Reinhardt Maschinenbau Gmbh Bending machine for flat material
DE102019008118A1 (en) * 2019-11-21 2021-05-27 Wolfram Hochstrate Swivel bending machine especially for counter-bending with a duplex bending beam

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4435719C1 (en) * 1994-10-06 1996-02-01 Daimler Benz Ag Device for edge trimming of sheet metal plates
US5640809A (en) * 1995-03-29 1997-06-24 Iannelli; Anthony M. Rain gutter shield
CN108746268B (en) * 2018-05-29 2019-10-18 温州盛淼工业设计有限公司 A kind of power bus-bar slot automatic production machine device people

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0022122A1 (en) * 1979-06-20 1981-01-07 VOEST-ALPINE Aktiengesellschaft Bending machine
EP0039322A1 (en) * 1980-04-24 1981-11-04 VOEST-ALPINE Aktiengesellschaft Device for folding sheet metal
EP0077314A1 (en) * 1981-10-09 1983-04-20 VOEST-ALPINE Aktiengesellschaft Folding device for a sheet-metal plate
DE3605815A1 (en) * 1986-02-22 1987-08-27 Weinbrenner Paul Maschbau Apparatus for the bending of sheet plates
US4722214A (en) * 1985-03-12 1988-02-02 Murata Kikai Kabushiki Kaisha Split die for holding work during bending operation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0022122A1 (en) * 1979-06-20 1981-01-07 VOEST-ALPINE Aktiengesellschaft Bending machine
EP0039322A1 (en) * 1980-04-24 1981-11-04 VOEST-ALPINE Aktiengesellschaft Device for folding sheet metal
EP0077314A1 (en) * 1981-10-09 1983-04-20 VOEST-ALPINE Aktiengesellschaft Folding device for a sheet-metal plate
US4722214A (en) * 1985-03-12 1988-02-02 Murata Kikai Kabushiki Kaisha Split die for holding work during bending operation
DE3605815A1 (en) * 1986-02-22 1987-08-27 Weinbrenner Paul Maschbau Apparatus for the bending of sheet plates

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5259231A (en) * 1989-10-26 1993-11-09 Reinhardt Maschinenbau Gmbh Process for the two-directional bending of sheet metal
EP0490828A1 (en) * 1990-12-07 1992-06-17 SAMAT S.r.l. A sheet-metal bending machine
EP0567193A1 (en) * 1992-04-22 1993-10-27 SAPIM AMADA S.p.A. A device for moving the blades of a press used for bending sheets
ES2063658A2 (en) * 1992-09-21 1995-01-01 Goiti S Coop Ltda Improved machine for folding sheet metal
EP0995509A1 (en) * 1998-10-19 2000-04-26 Paul Weinbrenner Maschinenbau GmbH &amp; Co. KG Bending machine
US6516648B1 (en) * 1999-01-19 2003-02-11 Reinhardt Maschinenbau Gmbh Bending machine for flat material
EP1121996A2 (en) * 2000-01-31 2001-08-08 Goiti, S.Coop Bending press for metal sheets
EP1121996A3 (en) * 2000-01-31 2003-07-02 Goiti, S.Coop Bending press for metal sheets
ES2190298A1 (en) * 2000-01-31 2003-07-16 Goiti S Coop Bending press for metal sheets
DE102019008118A1 (en) * 2019-11-21 2021-05-27 Wolfram Hochstrate Swivel bending machine especially for counter-bending with a duplex bending beam
DE102019008118B4 (en) 2019-11-21 2022-09-15 Wolfram Hochstrate Swivel bending machine, especially for counter bending with a duplex folding beam

Also Published As

Publication number Publication date
EP0353680A3 (en) 1990-11-28
ATE77270T1 (en) 1992-07-15
DE3826310C2 (en) 1991-11-07
DE3826310A1 (en) 1990-02-08
EP0353680B1 (en) 1992-06-17

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